NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
NEVER LEAVE THE HEATER UNATTENDED WHILE BURNING!
• Inspect the hose before each use
of the heater. If there is excessive
abrasion or wear, or the hose is cut,
replace prior to using the heater with
one of the Mr. Heater Hose No's.
shown above.
• Heater must be in an upright position
during operation.
• Installation should be done by a
qualified service person familiar with
non-vented gas space heaters.
• The heater should also be inspected
before use and at least annually by
a professional service person. More
frequent cleaning may be required
due to excessive lint from carpeting,
bedding material, etc.
• If you have any questions regarding
the location of your heater, please call
Technical Service at 800-251-0001.
Air Supply
• This heater consumes oxygen from the
room in which it is installed. To assure
complete combustion, an adequate
fresh air supply to the room, See
General Safety Instructions, Page 3.
NOTE: Provide additional ventilation of
at least 2 square inches for every 1000
BTUs per hour of input for any additional
fuel burning appliances used at the
same time.
Gas Connection
IMPORTANT: The 3/8" male and
female SAE flare connectors must be
checked and cleaned before assembly
and wrenched tightly for a gas-tight
connection. Be sure to tighten with a
wrench by turning it in the clockwise
direction.
Connect female flare end of the hose
to the heater and connect the other
end of hose into the propane (LP) gas
supply cylinder valve or connection
point. Tighten all hose connections. DO
NOT use thread sealant on any of these
connections.
IMPORTANT: Check all hose connections
for leaks with soapy water at the threaded
connection on the side of the heater.
DO NOT USE ANY EXPOSED FLAME
TO CHECK FOR LEAKS. DO NOT
OVERTIGHTEN.
Wall Installation
Your heater may be installed in a variety
of fixed locations and is supplied with
the necessary fasteners for mounting
your heater on a wall.
NOTE: Heater must be oriented vertically
(not sideways) when the heater is
mounted.
1. Select a firm, structurally sound wall
that provides the necessary clearances.
(Refer to table on page 3)
2. Locate mounting hardware found in
the accessories bag packaged with the
heater.
3. Use Figure 2 and Table 2 below for
hole spacing and minimum floor
clearance spacing for each heater.
MHCAT3LP
MHCAT6LP
A
9 7/8"
1 1 5/8"
B
7 1/2"
7 1/2"
C
5 1/8"
8"
Table 2
4. If using anchors, drill a 3/8" hole
into the wall at each mounting hole
position.
5. Push the plastic anchors into each hole
and thread the screws into them. Refer
to Figure 3.
6. Hang the heater on the screws,
allowing it to slide into place.
7. Check for clearances and make
adjustments as necessary by removing
heater and loosening or tightening
screws until it is firmly mounted.
NOTE: Screw head should be
approximately 5/16" from wall to ensure
secure installation.
8. Connect heater to gas supply. The unit
should be positioned so that the gas
supply shut-off valve at the heater is
easily accessible and the drip leg is as
close to the heater as possible.
Feet Installation
The brackets used to hang the heater
on a wall may also be used as feet to
stand the unit on a floor. Follow the
steps below to convert the hanger
brackets to feet.
1. Remove the four screws (two on each
side) that hold the bracket to the
heater. See Figure 4A.
2. Using the screws just removed, attach
the feet to the heater as shown in
Figure 4B.
3. Complete assembly by attaching the
footpads found in the accessories bag.
See Figure 4B.
6
Mr. Heater | Catalytic Heater
B
B
C (MIN)
C (MIN)
MHCAT8LP
13 5/16"
7 1/2"
9"
A
B
Operating Instructions and Owner's Manual
A
A
FLOOR
Figure 2
Anchor
Screw
Figure 3
Footpads
Figure 4